CN110735610A - soluble pressing plug - Google Patents
soluble pressing plug Download PDFInfo
- Publication number
- CN110735610A CN110735610A CN201911098917.9A CN201911098917A CN110735610A CN 110735610 A CN110735610 A CN 110735610A CN 201911098917 A CN201911098917 A CN 201911098917A CN 110735610 A CN110735610 A CN 110735610A
- Authority
- CN
- China
- Prior art keywords
- soluble
- ball seat
- steel ball
- soluble ball
- seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003825 pressing Methods 0.000 title description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000007789 sealing Methods 0.000 claims description 22
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 238000010009 beating Methods 0.000 claims 5
- 238000010008 shearing Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002332 oil field water Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001962 electrophoresis Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000007745 plasma electrolytic oxidation reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/08—Valve arrangements for boreholes or wells in wells responsive to flow or pressure of the fluid obtained
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Pressure Vessels And Lids Thereof (AREA)
- Automatic Assembly (AREA)
Abstract
The invention relates to a soluble ramming plug which comprises a ramming plug body, wherein a -th reducing groove is arranged in the ramming plug body, a steel ball seat is arranged in a -th reducing groove, the steel ball seat and the ramming plug body are positioned through a plurality of -th shearing pins, a second reducing groove is arranged in the steel ball seat, a -th soluble ball and a soluble ball seat are respectively arranged above and below the second reducing groove, a second soluble ball is arranged in the soluble ball seat, and the soluble ball seat and the ramming plug body are positioned through a plurality of second shearing pins.
Description
Technical Field
The invention relates to the technical field of drilling and production of oil wells in oil fields, in particular to soluble tamping plugs.
Background
At present, a liner pipe well completion process is mostly adopted due to serious collapse of a well wall, but when a hydraulic packer and a matched pressing plug ball seat are used, an upper well completion pipe column falls into a lower liner pipe after the ball seat is hit due to insolubility of materials, so that the risk of blocking a production channel and influencing normal production exists; meanwhile, the ball seat falls into the well, the ball seat is difficult to drill and grind in the later period of continuous drilling, the operation period is long, and the requirement of clean well completion is not met.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides soluble tamping plugs, and solves the technical problems that the production channel is blocked and the normal risk is influenced after the existing tamping plug is struck.
The invention is realized by the following technical scheme:
soluble pressure plug, including the pressure plug body, this internal reducing groove that is equipped with of pressure plug, the reducing inslot is equipped with the steel ball seat, cut the pin location through a plurality of between steel ball seat and the pressure plug body, be equipped with the second reducing groove in the steel ball seat, second reducing inslot below is equipped with soluble ball, soluble ball seat respectively about the second reducing inslot, be equipped with the soluble ball of second in the soluble ball seat, cut the pin location through a plurality of seconds between soluble ball seat and the pressure plug body.
, the steel ball seat and the pressing plug body are sealed through a sealing ring, and the soluble ball seat and the steel ball seat are sealed through a second sealing ring and a third sealing ring.
, respectively arranging metal sealing threads for connecting products at the upper end and the lower end in the pressurizing plug body, and arranging 2 rows of threaded holes at 6 positions on the outer part of the pressurizing plug body for connecting a th shearing pin and a second shearing pin.
, a snap spring is arranged in the pressing plug body above the steel ball seat.
, the angle of the conical surface of the steel ball seat is 20-60 degrees.
, the soluble ball seat is divided into two stages, the -stage inner conical surface angle is 40-60 degrees, the second-stage inner conical surface angle is 20-35 degrees, the upper end of the soluble ball seat is installed in a matching mode with the second reducing groove, the lower end of the soluble ball seat and the plug body are connected and located through a plurality of second shear pins, and a dissolution-resistant coating is further arranged on the surface of the soluble ball seat.
, the soluble ball seat, soluble ball and the second soluble ball are made of magnesium alloy degradable materials.
, the size of the soluble sphere is larger than the size of the second soluble sphere.
Compared with the prior art, the invention has the beneficial effects that:
according to the soluble pressing plugs provided by the invention, when the pressure reaches the shear force value of the shear pin, the soluble ball and the soluble ball seat are knocked down to fall into the well bottom to complete the setting of the packer, and the soluble ball seat and the soluble ball are dissolved under the action of the well bottom medium to form a clean production channel, so that the high-temperature resistant soluble ball seat which can meet the pressure bearing requirement and can be quickly dissolved after the ball seat is knocked can be realized, the problem of the matching process of liner pipe well completion is solved, and the technical effect of clean well completion is realized.
Drawings
Fig. 1 is a schematic structural diagram of soluble tampons according to an embodiment of the present invention.
In the figure:
1. the anti-theft plug comprises a pressing plug body, a snap spring, a soluble ball 3 and soluble balls 4 and sealing rings, a steel ball seat 5, a second soluble ball 6 and 7, a second sealing ring 8 and shear pins 9 and a soluble ball seat 10, a third sealing ring 11 and a second shear pin.
Detailed Description
The following examples are presented to illustrate certain embodiments of the invention specifically and should not be construed to limit the scope of the invention the disclosure of the invention may be modified simultaneously from materials, methods and reaction conditions, all of which are intended to fall within the spirit and scope of the invention.
The soluble tamping plug shown in figure 1 comprises a tamping plug body 1 made of metal materials, wherein a -th diameter-changing groove is formed in the tamping plug body 1, a steel ball seat 5 is arranged in the -th diameter-changing groove and used for bearing the steel ball seat 5 to prevent the steel ball seat 5 from falling into a well, a plurality of -th shearing pins 8 are used for positioning between the steel ball seat 5 and the tamping plug body 1, the pins are sheared after the set pressure reaches the -th shearing pin 8 shearing force value, a second diameter-changing groove is formed in the steel ball seat 5, a soluble ball 3 and a soluble ball seat 9 are respectively arranged above and below the second diameter-changing groove and used for preventing the soluble ball seat 9 from moving upwards, a second soluble ball 6 is arranged in the soluble ball seat 9, and the soluble ball seat 9 and the tamping plug body 1 are positioned through a plurality of second shearing pins 11.
The steel ball seat 5 and the plug body 1 are sealed through an -th sealing ring 4, and the soluble ball seat 9 and the steel ball seat 5 are sealed through a second sealing ring 7 and a third sealing ring 10.
The upper end and the lower end of the inside of the pressurizing plug body 1 are respectively provided with metal sealing threads for connecting products, and the outside of the pressurizing plug body 1 is provided with 2 rows of 6 uniformly distributed threaded holes for connecting shear pins 8 and a second shear pin 11.
The stopper body 1 of suppressing of 5 tops of steel ball seat is equipped with jump ring 2, prevents that the pressure differential that dams from leading to steel ball seat 5 to shift up, need adopt specialized tool to carry out the dismouting.
The conical surface angle of the steel ball seat 5 is 20-60 degrees.
The soluble ball seat 9 is divided into two-stage ball seats, the th-stage inner conical surface angle is 40-60 degrees, the second-stage inner conical surface angle is 20-35 degrees, the upper end of the soluble ball seat 9 is matched with a second reducing groove, the lower end of the soluble ball seat 9 and the ramming plug body 1 are connected and positioned through a plurality of second shear pins 11, a dissolution-resistant coating is further arranged on the surface of the soluble ball seat 9, the coating is manufactured by micro-arc oxidation, electrophoresis and powder spraying processes, the thickness of the coating is 20-150 mu m, the hardness is Hv600-1100, the bonding strength is not less than 65MPa, and the coating can be insoluble in 15 days in the conventional well bottom environment (under mud, salt water and oil field water media).
The soluble ball seat 9, the th soluble ball 3 and the second soluble ball 6 are all made of magnesium alloy degradable materials, can resist the temperature of 150 ℃ and can be dissolved in mud, salt water and oil field water media.
The th soluble ball 3 is larger than the second soluble ball 6, and is used with the steel ball seat 5 and the soluble ball seat 9.
When the packer is used, the pressing plug is connected to the lower end of the packer, a second soluble ball 6 is thrown into the soluble ball seat 9, the second soluble ball 6 is matched with the soluble ball seat 9, the pump pressure is carried out, due to the -th sealing ring 4 between the pressing plug body 1 and the steel ball seat 5, the sealing effect of the second sealing ring 7 and the third sealing ring 10 between the soluble ball seat 9 and the steel ball seat 5 is achieved, when the pressure reaches the shear force value of the second shear pin 11, the soluble ball seat 9 and the second soluble ball 6 are knocked down to fall into the well bottom, the packer setting is completed, and the soluble ball seat 9 and the second soluble ball 6 are dissolved under the action of well bottom medium to form a clean production channel.
When the soluble ball seat 9 is dissolved in the running process of the abnormal pipe column, the soluble ball seat 6 cannot be sealed for pressure bearing work after the soluble ball is thrown in, the soluble ball 3 is thrown in the ball seat, the soluble ball 3 is matched with the steel ball seat 5, and the pump is pumped, because the sealing ring 4 between the plug body 1 and the steel ball seat 5, the second sealing ring 7 between the soluble ball seat 9 and the steel ball seat 5 and the sealing function of the third sealing ring 10 are pressed, when the pressure reaches the shearing force values of the shearing pin 8 and the second shearing pin 11, the steel ball seat 5 and the soluble ball 3 are knocked down into the variable-diameter groove of the plug body 1, the packer is completed, and the soluble ball 3, the second soluble ball 6 and the soluble ball seat 9 are dissolved under the action of the medium in the well, so that a clean production channel is formed.
Compared with the existing pressing plug, the soluble pressing plug can meet the pressure-bearing requirement, and can realize the high-temperature-resistant soluble ball seat which can be rapidly dissolved after the ball seat is knocked, so that the problem of the matched process of liner pipe well completion is solved, and the technical effect of cleaning well completion is realized.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1, soluble tampons of beating, including the stopper body (1) of beating, its characterized in that, be equipped with the reducing groove in the stopper body of beating (1), reducing inslot is equipped with steel ball seat (5), through a plurality of shear pin (8) location between steel ball seat (5) and the stopper body of beating (1), be equipped with the second reducing groove in steel ball seat (5), the second reducing inslot below is equipped with soluble ball (3), soluble ball seat (9) respectively from top to bottom, be equipped with second soluble ball (6) in soluble ball seat (9), through a plurality of second shear pin (11) location between soluble ball seat (9) and the stopper body of beating (1).
2. soluble pressure plug according to claim 1, characterized in that, the steel ball seat (5) and the pressure plug body (1) are sealed by the sealing ring (4), the soluble ball seat (9) and the steel ball seat (5) are sealed by the second sealing ring (7) and the third sealing ring (10).
3. The soluble tamponade of claim 1, wherein the inside and the outside of the tampon body (1) are provided with 2 rows of 6 evenly distributed screw holes for connecting the shear pin (8) and the second shear pin (11).
4. soluble tampons according to claim 1, characterized in that, there is a circlip (2) in the tampon body (1) above the steel ball seat (5).
5. soluble tampons according to claim 1, wherein the angle of the conical surface of the steel ball seat (5) is 20-60 °.
6. The soluble tamping plug of claim 1, wherein the soluble ball seat (9) is divided into two-stage ball seats, the -stage inner conical surface angle is 40-60 degrees, the second-stage inner conical surface angle is 20-35 degrees, the upper end of the soluble ball seat (9) is matched with the second variable diameter groove, the lower end of the soluble ball seat (9) is connected and positioned with the tamping plug body (1) through a plurality of second shear pins (11), and the surface of the soluble ball seat (9) is further provided with a dissolution-resistant coating.
7. The soluble tampons of claim 1, wherein, the soluble ball seat (9) and soluble ball (3), second soluble ball (6) all adopt magnesium alloy degradable material to make.
8. soluble knock plug according to claim 1, characterized in that the soluble ball (3) has a larger size than the second soluble ball (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911098917.9A CN110735610B (en) | 2019-11-12 | 2019-11-12 | Soluble pressing plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911098917.9A CN110735610B (en) | 2019-11-12 | 2019-11-12 | Soluble pressing plug |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110735610A true CN110735610A (en) | 2020-01-31 |
| CN110735610B CN110735610B (en) | 2024-07-02 |
Family
ID=69272698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911098917.9A Active CN110735610B (en) | 2019-11-12 | 2019-11-12 | Soluble pressing plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110735610B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113252466A (en) * | 2021-05-25 | 2021-08-13 | 中石化石油工程技术服务有限公司 | High-temperature-resistant pressure-bearing test device and method for soluble ball seat |
| CN113958286A (en) * | 2020-07-21 | 2022-01-21 | 中国石油化工股份有限公司 | Ball seat for well completion operation and setting method |
| CN115478809A (en) * | 2021-06-16 | 2022-12-16 | 中石化石油工程技术服务有限公司 | Soluble ball seat device for cleaning liner tube and well completion |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204532255U (en) * | 2015-03-27 | 2015-08-05 | 天津克睿特维科技发展有限公司 | Ground hydraulic open-type down-hole drainage device |
| CN204754865U (en) * | 2015-06-05 | 2015-11-11 | 中国石油化工股份有限公司 | Ball seat bumps and presses seat combination tool for well cementation |
| US20160010400A1 (en) * | 2014-07-11 | 2016-01-14 | Baker Hughes Incorporated | Landing collar, downhole system having landing collar, and method |
| CN105937383A (en) * | 2016-06-20 | 2016-09-14 | 中国石油天然气股份有限公司 | Soluble full-bore ball seat working barrel |
| CN109162670A (en) * | 2018-10-13 | 2019-01-08 | 中石化石油工程技术服务有限公司 | Soluble E type seating and sealing unit and its set method |
| CN209228337U (en) * | 2017-11-09 | 2019-08-09 | 成都维泰油气能源技术有限公司 | A kind of dissolvable bridge plug |
| CN209369772U (en) * | 2018-11-10 | 2019-09-10 | 西南石油大学 | A kind of sealing structure of soluble ball seat |
| CN211342860U (en) * | 2019-11-12 | 2020-08-25 | 四机赛瓦石油钻采设备有限公司 | Soluble pressing plug |
-
2019
- 2019-11-12 CN CN201911098917.9A patent/CN110735610B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160010400A1 (en) * | 2014-07-11 | 2016-01-14 | Baker Hughes Incorporated | Landing collar, downhole system having landing collar, and method |
| CN204532255U (en) * | 2015-03-27 | 2015-08-05 | 天津克睿特维科技发展有限公司 | Ground hydraulic open-type down-hole drainage device |
| CN204754865U (en) * | 2015-06-05 | 2015-11-11 | 中国石油化工股份有限公司 | Ball seat bumps and presses seat combination tool for well cementation |
| CN105937383A (en) * | 2016-06-20 | 2016-09-14 | 中国石油天然气股份有限公司 | Soluble full-bore ball seat working barrel |
| CN209228337U (en) * | 2017-11-09 | 2019-08-09 | 成都维泰油气能源技术有限公司 | A kind of dissolvable bridge plug |
| CN109162670A (en) * | 2018-10-13 | 2019-01-08 | 中石化石油工程技术服务有限公司 | Soluble E type seating and sealing unit and its set method |
| CN209369772U (en) * | 2018-11-10 | 2019-09-10 | 西南石油大学 | A kind of sealing structure of soluble ball seat |
| CN211342860U (en) * | 2019-11-12 | 2020-08-25 | 四机赛瓦石油钻采设备有限公司 | Soluble pressing plug |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113958286A (en) * | 2020-07-21 | 2022-01-21 | 中国石油化工股份有限公司 | Ball seat for well completion operation and setting method |
| CN113252466A (en) * | 2021-05-25 | 2021-08-13 | 中石化石油工程技术服务有限公司 | High-temperature-resistant pressure-bearing test device and method for soluble ball seat |
| CN115478809A (en) * | 2021-06-16 | 2022-12-16 | 中石化石油工程技术服务有限公司 | Soluble ball seat device for cleaning liner tube and well completion |
| CN115478809B (en) * | 2021-06-16 | 2024-04-02 | 中石化石油工程技术服务有限公司 | Soluble ball seat device for cleaning well completion of liner tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110735610B (en) | 2024-07-02 |
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